def render_to_response(self, context, **response_kwargs):
epsg = proj4_to_epsg(pyproj.Proj(str(self.object.projection)))
if epsg:
full_extent = self.object.full_extent
initial_extent = self.object.initial_extent
else:
epsg = 102100
projection = pyproj.Proj('+units=m +init=epsg:3857')
full_extent = self.object.full_extent.project(projection)
initial_extent = self.object.initial_extent.project(projection)
data = {
'currentVersion': '10.1',
'serviceDescription': self.object.description,
'mapName': self.object.name,
'description': self.object.description,
'copyrightText': '',
'supportsDynamicLayers': True,
'layers': [
{
'id': v.index,
'name': v.name,
'defaultVisibility': True,
'parentLayerId': -1,
'subLayerIds': None,
'minScale': 0,
'maxScale': 0
} for v in self.object.variable_set.all()
],
'spatialReference': {'wkid': epsg},
'singleFusedMapCache': False,
'initialExtent': extent_to_envelope(initial_extent, epsg),
'fullExtent': extent_to_envelope(full_extent, epsg),
'supportedImageFormatTypes': ','.join(SUPPORTED_IMAGE_FORMATS),
'capabilities': 'Map,Query',
'supportedQueryFormat': 'JSON'
}
if self.object.supports_time:
data['timeInfo'] = {
'timeExtent': [date_to_timestamp(self.object.time_start), date_to_timestamp(self.object.time_end)],
'timeRelation': 'esriTimeRelationOverlaps',
'defaultTimeInterval': self.object.time_interval,
'defaultTimeIntervalUnits': TIME_UNITS_MAP.get(self.object.time_interval_units),
'hasLiveData': False
}
return HttpResponse(json.dumps(data), content_type='application/json')
def get_layer_data(variable):
epsg = proj4_to_epsg(variable.full_extent.projection)
if epsg:
full_extent = variable.full_extent
else:
epsg = 102100
projection = pyproj.Proj('+units=m +init=epsg:3857')
full_extent = variable.full_extent.project(projection)
data = {
'id': variable.index,
'name': variable.name,
'type': 'Raster Layer',
'description': variable.description,
'geometryType': None,
'hasZ': False,
'hasM': False,
'copyrightText': None,
'parentLayer': None,
'subLayers': None,
'minScale': 0,
'maxScale': 0,
'defaultVisibility': True,
'extent': extent_to_envelope(full_extent, epsg),
'displayField': variable.variable,
'maxRecordCount': 1000,
'supportsStatistics': False,
'supportsAdvancedQueries': False,
'capabilities': 'Map,Query',
'supportedQueryFormats': 'JSON',
'isDataVersioned': False
}
if variable.supports_time:
data['timeInfo'] = {
'timeExtent': [date_to_timestamp(variable.time_start), date_to_timestamp(variable.time_end)],
'timeInterval': variable.service.time_interval,
'timeIntervalUnits': TIME_UNITS_MAP.get(variable.service.time_interval_units),
'exportOptions': {
'useTime': True,
'timeDataCumulative': False
},
'hasLiveData': False
}
return data
